environmental flow

环境流动
  • 文章类型: Journal Article
    使用环境流量(e-Flow)评估是一种广泛采用的方法,可促进有关河流系统中水资源的可持续管理和利用的知情决策。鲁菲吉河下游流域面临来自多个部门的各种发展压力,包括水电,采矿,农业,牲畜,钓鱼,和旅游业,需要对子集水区进行有效管理,以防止对环境造成重大影响。因此,必须全面理解集水区的属性,包括气候和非气候因素。支持使用全球环境流量计算器对斯蒂格勒峡谷的可用数据进行e-Flow批量分析,进行了范围审查,以确定鲁菲吉河下游流域的环境流量状况。研究结果表明,虽然在理解eFlow估计方面取得了进展,有限的数据和生态水文过程理解差仍然存在挑战。坦桑尼亚通常采用水文和整体方法;然而,不确定性依然存在,提出了有关决策工具与公众水资源利用之间的信任问题。气候变化影响鲁菲吉河流域的e流,各种情况下的预测表明温度升高,不同的降雨量,和湿度水平。Further,该地区已被确定为脆弱的“热点”,社区面临更大的气候压力源风险。根据流域现有和计划中的开发项目,包括水电大坝,采矿,农业,牲畜,渔业,评估鲁菲吉河下游流域的电子流量以确保资源的可持续性至关重要。建议提倡保持河流中动态的环境流动状态,考虑到鲁菲吉河流域的栖息地连通性。未来的研究方向应该是量化基流对地表流的贡献,以及鲁菲吉河下游流域的盐度动态,这会影响三角洲的生物多样性。
    The use of Environmental flow (e-Flow) assessment is a widely adopted approach to facilitate informed decision-making concerning sustainable management and utilization of water resources in river systems. The Lower Rufiji River Basin faces various developmental pressures from several sectors, including hydropower, mining, agriculture, livestock, fishing, and tourism, necessitating effective management of the sub-catchment area to prevent significant environmental impacts. Consequently, it is essential to acquire a comprehensive comprehension of the catchment\'s attributes, encompassing both climatic and non-climatic factors. Supported by e-Flow batch analysis of the available data at Stiegler\'s Gorge using the global environmental flow calculator, a scoping review was conducted to determine the status of environmental flow in the lower Rufiji River basin. The findings suggest that, while there has been progress in understanding eFlow estimation, limited data and ecohydrological processes\' poor comprehension still present challenges. Hydrological and holistic methodologies are commonly employed in Tanzania; however, uncertainties remain, raising questions concerning trust between decision-making tools and water resource utilization by the public. Climate variability influences e-Flow in the Rufiji River Basin, and the projections under various scenarios indicate an increased temperature, varying rainfall, and humidity levels. Further, the area has been identified as a vulnerable \"hotspot\" where communities face greater climate stressor risks. With the existing and planned developmental projects in the basin, including hydroelectric dams, mining, agriculture, livestock, and fisheries, it is critical to assess e-Flow in the Lower Rufiji River basin to ensure resource sustainability. Advocating for preserving a dynamic environmental flow regime in rivers is recommended, considering the Rufiji River Basin\'s habitat connectivity. The future research direction should be quantifying the contribution of base flow to the surface flow, and salinity dynamics in the Lower Rufiji River Basin, which can affect the Delta\'s biodiversity.
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